Over at Jalopnik, our pal Máté Petrány got the once-in-a-lifetime chance to ride shotgun as Koenigsegg factory test driver Robert Serwanski hustled the crazy machine up the hill at the GoodwoodFestival of Speed.

It's exactly as jaw-dropping as you expected it would be.

Amazingly, this run doesn't even show the full potential of the car—Máté explains that this particular One:1 was a customer car, already sold to a group of British buyers for a price north of $3 million.